Raul Martinez Leads Lincoln Diaz-Balart

Speaker Nancy Pelosi would like nothing more than to add a few more people with a (D) after their names do her bidding in the U.S. House of Representatives, and her wish looks like it could come true in a historically Republican Miami district.

Incumbent Congressman Lincoln Diaz-Balart, of Florida's 21st, is trailing in a new poll conducted by Roll Call -- but only slightly. His challenger, notorious former Hialeah mayor Raul Martinez, scored 48 percent of those surveyed to Diaz-Balart's 46.

Diaz-Balart is crushing Martinez in the Cuban vote (70 percent to 28) . But Martinez has made up ground with non-Cuban Hispanics, non-Hispanic whites, and African Americans. He also leads among younger voters.

Meanwhile, McCain and Obama are tied in the district with 48 percent each.